# Fuel Lock® vs GasNote

The clearest difference is in-app purchases: Fuel Lock® at none against GasNote's 3. Fuel Lock® also leads on iOS requirement (15.1 vs 17.0). GasNote's advantage is update cadence (every 2 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. GasNote sells 3 one-off in-app purchases. Fuel Lock® asks for nothing beyond the download.

Fuel Lock® ships an update every 5 weeks, GasNote every 2 days. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Fuel Lock® | GasNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Size | 33 MB | 40 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IntraGrain Technologies Inc](https://appshunter.io/developer/985769003) | [Tianyu Zhou](https://appshunter.io/developer/1457796787) |

## What reviewers say

### Fuel Lock®

[App page](https://appshunter.io/ios/app/fuel-lock/id1405120861)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### GasNote

[App page](https://appshunter.io/ios/app/gasnote/id6742348082)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |
| Buy me a coffee | $1.99 | one-time |
| Buy me a coffee | $6.99 | one-time |


## Frequently asked questions

### Is Fuel Lock® free?

Fuel Lock® is free to download, with no in-app purchases.

### Is GasNote free?

GasNote is free to download, with in-app purchases available.

### Do Fuel Lock® or GasNote have ads?

Neither Fuel Lock® nor GasNote shows ads.

### Which is updated more often, Fuel Lock® or GasNote?

Fuel Lock® ships an update every 5 weeks, and GasNote every 2 days. Most recently, Fuel Lock® was updated on September 29, 2026 and GasNote on September 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*